//#ifndef _KEY_H_
//#define _KEY_H_

//#include <STC15F2K60S2.H>


//sbit key_4 = P3^3;
//sbit key_5 = P3^2;
//sbit key_6 = P3^1;
//sbit key_7 = P3^0;

//unsigned char key_return(void);
//void key_loop(void);

//#endif